If air is blow n with a straw under of the pans of a physical balance present in equilibrium position, then that pan.

Question

If air is blow n with a straw under of the pans of a physical balance present in equilibrium position, then that pan. (A) rises up (B) remains in th e same position (C) lowers down (D) rises or lowers depending upon the velocity of air blown

Tardigrade Admin · Accepted Answer

As the air is blown, the speed of air particles is more than the surrounding air. So, there would be an air pressure, (1/2) ρ v 2. So the pan will lower down.

Q. If air is blow n with a straw under of the pans of a physical balance present in equilibrium position, then that pan.

rises up

remains in th e same position

lowers down

rises or lowers depending upon the velocity of air blown

As the air is blown, the speed of air particles is more than the surrounding air. So, there would be an air pressure, $\frac{1}{2} ρ v^{2}$ . So the pan will lower down.

Q. If air is blow n with a straw under of the pans of a physical balance present in equilibrium position, then that pan.

rises up

remains in th e same position

lowers down

rises or lowers depending upon the velocity of air blown

As the air is blown, the speed of air particles is more than the surrounding air. So, there would be an air pressure, 21​ρv2. So the pan will lower down.

As the air is blown, the speed of air particles is more than the surrounding air. So, there would be an air pressure, $\frac{1}{2} ρ v^{2}$ . So the pan will lower down.